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	Provedor de dados AgEcon (2) Infoteca-e (1) Autor Finlayson, John D. (1) Hume, Iain H. (1) McColl, James C. (1) Nordblom, Thomas L. (1) PRUSKI, F. F. (1) RODRIGUES, L. N. (1) SILVA, E. M. da (1) Young, Michael D. (1) Mais... Palavra-chave Interception (3) Irrigation (2) Agricultura de Precisão (1) Agriculture (1) Armazenamento superficial (1) Catchment (1) Cobertura Vegetal (1) Demand (1) Economic surplus (1) Entitlement (1) Environmental Economics and Policy (1) Environmental services (1) Escoamento superficial (1) Evapo-transpiration (1) Forest (1) Infiltration water (1) Infiltração (1) Interceptação (1) Irrigação (1) Market (1) Mais... Tipo do documento Conference Paper or Presentation (2) Documentos (INFOTECA-E) (1) Ano 2011 (1) 2008 (1) 2003 (1) País United States (2) Brazil (1) Idioma Inglês (2) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Procedimento para estimativa da intensidade de precipitação máxima admissível em pivô-central com base nas características do equipamento e do solo. Infoteca-e RODRIGUES, L. N.; PRUSKI, F. F.; SILVA, E. M. da. ABSTRACT: A procedure to estimate the center pivot maximum application rate, based on equipment and soil characteristic is presented. It was developed to minimize the surface runoff. To achieve this objective, the Green and Ampt (GA) infiltration equation was modified to include surface sealing and surface storage. The highest application rate is determined by solving a system of equations which incout to application rate and its derivative and the GA and its derivative. Sensitivit analysis showed that the procedure represented adequately the variation in the main parameters that interfere in the value of the maximum application rate. This methodology can be used to desing the optimum center pivot irrigation system for given combination of soil, climate... Tipo: Documentos (INFOTECA-E) Palavras-chave: Escoamento superficial; Interceptação; Armazenamento superficial; Precision farming; Surface runoff; Infiltration water; Plant cover; Interception; Superficial storage.; Agricultura de Precisão; Água; Cobertura Vegetal; Infiltração; Irrigação; Pivô Central; Solo.; Agriculture; Irrigation; Soil; Water management.. Ano: 2003 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567998 Double trouble: The importance of accounting for and defining water entitlements consistent with hydrological realities (Conference title: Water Trading in the MDBC: How well is the market functioning?) AgEcon Young, Michael D.; McColl, James C.. When water entitlement and water sharing systems are mis-specified, that is specified in a manner that lacks hydrological integrity, inefficient investment and water use is the result. Using Australia's Murray Darling Basin as an example, this paper attempts to reveal the economic consequences of entitlement mis-specification. Options for specification of entitlement and allocation systems in a way that has hydrological integrity are presented. It is reasoned, that if entitlement and allocation system were set up in this manner the result would be an efficient allocation regime that would autonomously adjust to climatic shifts, changes in prices and changes in technology whilst maintaining environmental integrity. Tipo: Conference Paper or Presentation Palavras-chave: Interception; Water accounting; Water rights; Water markets; Water trading; Resource /Energy Economics and Policy. Ano: 2008 URL: http://purl.umn.edu/6037 Disposition of precipitation: Supply and Demand for Water Use by New Tree Plantations AgEcon Nordblom, Thomas L.; Finlayson, John D.; Hume, Iain H.. As the greatest rainwater users among all vegetative land covers, tree plantations have been employed strategically to mitigate salinity and water-logging problems. However, large-scale commercial tree plantations in high rainfall areas reduce fresh water inflows to river systems supporting downstream communities, agricultural industries and wetland environmental assets. A bio-economic model was used to estimate economic demand for water by future upstream plantations in a sub-catchment (the 2.8 million ha Macquarie valley in NSW) of the Murray-Darling Basin, Australia. Given four tree-product values, impacts were simulated under two settings: without and with the requirement that permanent water entitlements be purchased from downstream entitlement... Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy; Forest; Environmental services; Catchment; Water sources; Interception; Entitlement; Supply; Demand; Market; Economic surplus; Evapo-transpiration; Urban water; Irrigation; Wetlands.. Ano: 2011 URL: http://purl.umn.edu/101225 Registros recuperados: 3 Primeira ... 1 ... Última

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